Ice-making apparatus.



C. O. DAWSON.

ICE MAKING APPARATUS.

APPLICATION FILED 0CT.7,1918.

Patented D80. 8, 1914.

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COLD Elf/IVE "V467 THE NORRIS PETERS cu. PHOTO-LITHO WASHINGTON 01C C. O. DAWSGN.

ICE MAKING APPARATUS.

APPLICATION FILED 001, 7, 191a Patented Dec. 8, 1914.

2 SHEETS-SHEET 2.

'HE NORRIS PETERS ca, PHOTU'LIT! UNITED STATES PATENT OFFICE.

CHARLES O. DAWSON, OF CHETOPA, KANSAS.

ICE-MAKING APPARATUS.

Application filed October 7, 1913.

To all whom it may concern Be it known that 1, CHARLES O. DAWSON, a citizen of the United States, residing at Chetopa, in the county of Labette and State of Kansas, have invented new and useful Improvements in Ice-Making Apparatus, of which the following is a specification.

This invention relates to certain new and useful improvements in ice making apparatus of that general type embodying the use of brine tanks and freezing cans, the object of the invention being to provide a means whereby the brine or refrigerating agent may be automatically circulated through the body of water contained in the can, whereby the water is subjected simultaneously to the influence of the refrigerant in the tank and to the influence of the refrigerant circulating through the can, thus freezing the water from the walls of the can inward and from the center of the can outward and materially reducing the period of congelation, while at the same time producing a superior grade of ice.

A further object of the invention is to provide an ice making apparatus of the character specified whereby the necessity of circulating the brine or refrigerating agent through the tank is avoided.

The invention consists of the features of construction, combination and arrangement of parts herein fully described and claimed, reference being had to the accompanying drawings in which Figure 1 is a sectional view through a brine tank and a freezing can contained therein, showing the application of the invention, the parts of the invention appearing in elevation. Fig. 2 is a similar view, showing the parts of the invention in section. Fig. 3 is a sectional plan view through the apparatus. Fig. 4 is a perspective view of the apparatus.

Referring to the drawing, 1 designates a tank containing the brine or refrigerant, which is cooled in any suitable manner, and 2 a refrigerating can disposed therein, which can is filled with a body of water to be converted into ice. The brine within the tank 1 may be cooled by means of refrigerating pipes in the tank, or the brine may be cooled outside the tank and suitable circulating pipes be provided for conducting the cooled brine 2 and discharge the warm brine from the tank. In the present instance I Specification of Letters Patent.

Patented Dec. 8, 1914.

Serial No. 793,907.

have shown conductors connected with the with a flange 5 fastened to the bottom 3,

which is provided with an opening 6 for the upward flow of brine into sai tube.

The upper end of the tube 4 is closed by a head 7, having a threaded opening 8 in one of its sides communicating with the tube,"

into which opening is threaded one of the ends of a laterally extending, horizontally disposed return pipe 9. The opposite or outer end of said return pipe 9 is in threaded engagement with a flanged nipple 10 se cured to one of the side walls of the can 2 in line with an outlet opening 11 formed therein. The pipe 9 is provided with an angular surface 12 whereby it may be gripped by a wrench or other suitable tool and turned to apply or remove it.

In the operation of the device, the tank 1 is supplied with brine in the usual way, and the can 2 filled with water and placed in the brine tank. As soon as the can 2 is placed in the tank 1, the brine from the tank 1 flows upwardly into the tube 4., which is initially of the same temperature as the water in the can 2. The brine thus coming in contact with the walls of the tube, which are of a correspondingly higher temperature than the brine tank 1, is warmed by.

or heat abstracting action of the brine di- I.

rectly contained in the tank 1, as well as the cooling or heat abstracting action of the brine circulating through the interior circulating attachment, causing the water to be frozen from the Walls of the freezing can inwardly and from the center of the can outwardly. By this process of congelation,

use .of my improved center-freezing circu lating attachment is that it may be applied to freezing cans of the type customarily employed in ice making apparatus of the character specified without varying the construction thereof, and that owing to the described manner of circulating the brine internally through the body of water the usual process of circulating the brine in the tank 1 may bedispensed with, thus enabling ice to .berapidly made at a very low cost.

1.111 an apparatus of the character described, a tank for containing a refrigerating liquid, a freezing can disposed Within said tank and having an elevated bottom, a

conical tube having a flanged lower end secured to the elevated bottom of the can and communicating therethrough with said tank, said tube extending upwardly into the can, a head closing the upper end of said tube and having a laterally extending threaded aperture, thimble secured to the side of the can and having a threaded aperture communicating with the can, and a conducting pipe detachably threaded into said head and thimble.

2. In an apparatus of the character deside wall coinciding with the bore of the nipple,-and a horizontal tube or pipe threaded through saidopening and nipple: and projecting externally therethrough at its outer end and havingits inner end threaded into and'communicating withthe detachable head, the said outer endof thetube being provided with anangular head whereby it may be engaged and rotated.-

In testimonywhereofl affix my. signature in presence of twowit'ne'sses. Y

v CHARLES O. DAWSON. Witnesses: a

J. B. 0001:, E. E. CORDERMAN.

Copies this patent may be obtained for five cents each, by addressing the Commissioner of Pat ents Washington, D. 0. 

